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Nano-mechanical properties of silver-welded YBCO bulks
dc.contributor.author | Roa Rovira, Joan Josep |
dc.contributor.author | Bartolomé, E. |
dc.contributor.author | Bozzo, Bernat |
dc.contributor.author | Capdevila, X.G. |
dc.contributor.author | Granados García, Javier A.J. |
dc.contributor.author | Segarra, M. |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica |
dc.date.accessioned | 2012-11-19T09:26:14Z |
dc.date.available | 2012-11-19T09:26:14Z |
dc.date.created | 2010-02-09 |
dc.date.issued | 2010-02-09 |
dc.identifier.citation | Roa, J. [et al.]. Nano-mechanical properties of silver-welded YBCO bulks. "Journal of physics: conference series", 09 Febrer 2010, vol. 234, núm. 1, p. 012034/1-012034/6. |
dc.identifier.issn | 1742-6588 |
dc.identifier.uri | http://hdl.handle.net/2117/16942 |
dc.description.abstract | The mechanical properties of melt-textured YBCO bulk boundaries are a topic of special interest especially in the manufacturing of superconductor devices for engineering applications. Instrumented indentation technique is a powerful tool widely employed to characterize the mechanical properties of small volumes. We presented results of the nanohardness (H) and Young’s modulus (E) across [001]-welds fabricated by silver welding. The residual imprints performed by a sharp tip indenter were observed by Field Emission Scanning Electron Microscope (FE-SEM) to investigate the different fracture mechanisms nucleated during the indentation process. Results show a decrease of the nanohardness across the grain boundary related to the appearance of a “welding path” free of Y-211 particles. The FE-SEM images show chipping and sink-in effects in that region. Remarkably, for zero-angle welds the mechanical properties are unaltered across the joint, thus probing the high quality of silver welds for large-scale applications. |
dc.language.iso | eng |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials |
dc.subject.lcsh | Superconductors |
dc.title | Nano-mechanical properties of silver-welded YBCO bulks |
dc.type | Article |
dc.subject.lemac | Superconductors d'alta temperatura -- Propietats mecàniques |
dc.subject.lemac | Nanotecnologia |
dc.identifier.doi | 10.1088/1742-6596/234/1/012034 |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.identifier.drac | 11072415 |
dc.description.version | Postprint (published version) |
local.citation.author | Roa, J.; Bartolomé, E.; Bozzo, B.; Capdevila, X.; Granados, X.; Segarra, M. |
local.citation.publicationName | Journal of physics: conference series |
local.citation.volume | 234 |
local.citation.number | 1 |
local.citation.startingPage | 012034/1 |
local.citation.endingPage | 012034/6 |
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